APPENDIX 2 in Shallow-water Rissoidae of the genera Alvania Risso 1826 Haurakia Iredale 1915 Parashiela Laseron 1956 Simulamerelina Ponder 1985 and Subestea Cotton 1944 Gastropoda Caenogastropoda Rissooidea from French Polynesia with the description of a new deep-water genus

APPENDIX 2. — Summary statistics of teleoconch and protoconch measurements of Alvania herosae n. sp. (with range and mean in mm and standard deviation), Morph A+B (1-17+1-20 see App. 3 & 4).
TeleoconchMin–maxMeanStdHeight1.55-2.472.060.254Width0.9-1.321.130.109Height/Width ratio1.67-2.021.810.093Aperture height0.7-1.050.850.086Height/aperture height ratio2.15-2.652.430.130No. whorls3-4.23.70.36No. axial ribs on last whorls13-2116.51.98No. spiral cords on last whorls7-139.61.69(above aperture)(3-7)(4.7)(0.96)ProtoconchMin–maxMeanStdHeight0.205-0.2750.2410.015Diameter of nucleus0.100-0.1250.1150.007Diameter of first half whorl0.20-0.250.220.015Maximun diameter0.275-0.3370.3080.014No. whorls1-1.31.20.05Paucispiralyes––